Hyundai H-IWR1-3P-UI056/C Instruction Manual & Warranty Card Download

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12.

Electrical instant water heater

13.

Electrical instant water heater

Incoming water is heated inside the heating  ask, when it  ows through the heating element.
Water temperature in the water supply network may  uctuate throughout the year from +3°C
to +20°C. Therefore, water  ow in winter shall be made lower than in summer to obtain the
optimum water temperature. Water  ow is controlled by the valve at the water inlet of the water
heater. Never install an isolation valve or shut o  water  ow at the water heater outlet. A er

activation of heating, wait for 10-20 sec until temperature of heated water is stabilized.

For adjustment of hot water temperature, use the valve at the inlet connection (cold water inlet).

When you decrease inlet ow rate of water, you increase outlet temperature of water and vice
versa. For water heaters of H-IWR1-5P and H-IWR1-6P series, you can also place the On/O /

power control knob to the low power position ( ) or to the medium power position ( ) in or-

der to adjust water temperature. To switch o the water heater, place the On/O /power control

knob to the OFF position ( ), close the cold water feed valve at the inlet, and de-energize the
water heater.

CLEANING

Operation of the water heater may result in scaling of the shower/tap nozzle openings. This

reduces e ciency of heating, deteriorates water spraying, and increases water pressure in the
heating ask.

For prevention of such phenomena, periodically clean the nozzle using household chemical

agents and so brushes. Do not use abrasive cleaning substances and inappropriate chemical

agents.

Prior to cleaning the outer surfaces, disconnect the water heater from the electrical mains and
allow it to fully cool down. Clean the outer surface of the appliance housing with a slightly moist-

ened so cloth and then wipe it dry. Do not use abrasive cleansers for cleaning.

If water ow rate from the water heater decreases, clean the coarse lter (rubber gasket and

strainer) installed at the cold water inlet of the water heater. For that, disconnect the appliance

from the electrical mains and allow it to fully cool down. Then, shut o cold water feeding,

unscrew the cold water supply pipe from the water heater, remove the rubber gasket with the

strainer, and ush it under a jet of owing water. Restore the inlet connection in the reverse

sequence.

1 - O position
2 - On/O and power control knob

3 - Low power position
4 - Medium power position
5 - Full power position

Before rst start or a er a long idle period of the water heater, ll it with water opening the cold
water feed isolation valve and make sure that cold water steadily ows from the water outlet at
the consumption point. A er that, switch on the appliance and make sure that the power indica

tor on the front panel lights up*.

To switch on heating, place the control knob to the ON position ( ). If su cient water ow and

pressure at least 0.08 MPa are available, the water heater will start heating water.

* For connection to the electrical mains, this series of water heaters is complete with a power
cord and a male plug. The power cord has length of 1.5 m and copper conductor section of 3x1.5
mm2.

Never use an electrical male plug and socket for connection of the water heater to the electrical
mains, except for H-IWR1-3P series. The water heater shall be connected to the 220 VAC power

supply source permanently with obligatory connection to the electrical grounding loop. Make

sure that resistance of the grounding loop is < 4 . The electrical cable is led into the water

heater through its rear wall and connected to the terminal block according to marks on the rear

panel, where - ground conductor, L - phase conductor, N - neutral conductor. To lead in and

connect the electrical cable, remove the appliance front panel. For that, unscrew the securing

screw in its upper part. A er connection of the electrical cable to the terminal block, make sure

that all clamping screws of the terminal block are secured. Secure the cable inside the heater
using a clamping plate, place back the front panel, and turn in the securing screw in the upper
part of the appliance.

OPERATION

* The service life of the power indicator is 3000 hours continuously. Therefore, disconnect the appliance from the

electrical mains a er use to extend the power indicator life.

H-IWR1-3P*

H-IWR1-5P

H-IWR1-6P

3500

5500

6500

1,5

2,5

4,0